Furnace-grate.



C.A.H0RN. FURNACE GRATE.

APPLICATION FILED JUNE 5. I917- 1,261,389.. Patented Apr, 2,1918.

3 SHEETS-SHEET 1.

3 @513 attozmeva a; 0%, WA M C. A- HORN.

FURNACE GRATE.

APPLICATION FILED JUNES. 1911.

Patented Apr. 2,1918.

a SHEETS-SHEET 2.

ila

C. A. HORN.

} FURNACE GRATE.

APPLICATION FILED JUNE 5. tal

I ,26L389. Patented Apr. 2,1918.

I 3 SHE 3- ETS-SHEET CHARLES A. HORN, 0F WOODHAVEN, NEW YORK, ASSIGNOR OF ONE-FOURTH TO W. EVERETT BUNDLE, OF

EAST ORANGE, NEW JERSEY, AND ONE-FOURTH '10 HAROLD E. LOMIBARD, OF BLOOMEIELD, NEW JERSEY.

FURNACE-GRATE.

Specification of Letters Patent.

Patented Apr. 2, rare.

To all whom it may concern:

Be it known that I, CHARLES A. Hoax, a subject of the German Emperor, residing at Woodhaven, in the countyof Queens, city and State of New York, have invented certain new and useful Improvements in Furnace-Grates, of which the following is a full, clear, and exact description.

his invention relates to furnace grates, particularly grates of the automatic stoking type, and pertains especially to the upon which the burning fuel rests. Its chief object, briefly stated,.is to provide a simple and effective grate in which the amount and distribution .of the air supply, upwardly through the grate to the fuel, can be conveniently and easily regulated or varied according to the nature of the fuel and other conditions of use. Another object is to provide grate-top elements of simple form which can be manufactured at low cost and which can be readily assembled on their supports or carriers and can be removed and replaced with equal case. To these and other ends the invention consists' in the novel features and combinations hereinafter described.

One form of the invention is illustrated in the annexed drawings, in which- Figure 1 is a plan view of a portion of a furnace grate using my improved gratetops.

Fig. 2 is a longitudinal section, on a, larger scale, showing several of the overlapping grate-tops in side elevation.

Fig. 3 is a cross section on line 33 of.

Fig. 2, showing several grate-tops, with spacers of uniform width between them.

Flg. 4 is a crosssection on the same plane as Fig. 3, but showing spacers of different widths between the grate-tops.

Fig. 5 is a cross section on line 55 of Fig. 2.

Fig. 6 is a perspective view of a grate-top of the preferred form.

Fig. 7 is a perspective view of a spacer adapted for use with grate-tops of the type illustrated in Fig. 6.

- In the grate illustrated, the grate-tops 10 are carried by transverse parallel carrierbars 11. These latter are of L-shaped cross section, with their horizontal webs or flanges securely'bolted to brackets 12 which are pivotally mounted on transverse portable shafts 13. -The brackets extend forwardly from the shafts, that is, toward the end of the sociated with suitable mechanism shown) at the front of the furnace by which a they can be reciprocated, therebyrocking the elements furnace at which the fuel is introduced. On

their forward faces the carrier-bars 11 are equipped with downwardly extending .fingers l4: resting by gravity on lugs 15 on arms 16 which are pivotally mounted on the shafts 13 like the brackets 12. These arms are connected to links 17 which are themselves as- (not preferably rather narrow in proportion to' their length so that they .will need no air- -openings to protect them from the heat of the burning fuel. Each grate-top, the ends of which are rounded off as shown, is composed of a central longitudinal web 18, hay ing the lateral flanges 19. On the underside at the front is a downwardly open flaring recess 20 to fit down upon the rounded upper edge of the carrier-bar, as clearly shown in Fig. 2, the edges of the recess being preferably beveled as shown in F igs. l and 5. The

grate-tops are arranged side by side in transverse series on the transverse carrier-bars. as shown in Fig. 1, with the rear ends of the grate-tops of each series overlying and resting loosely upon the grate-tops of the series next in rear, as clearly indicated in Fig. 2.

The air for supporting the combustion of the fuel on the grate passes from below upwardly between the grate-tops 10, which, as before stated, are preferably imperforate. For this purpose the grate-tops in the embodiment illustrated are spaced apart by means of spacers or spacing members or devices 21 of inverted V-shape straddling the upper edges of the carrierbars between the grate-tops. The outer, or upper, edges of the spacers are beveled to fit the corresponding beveled edges of the recesses 20 in the grate-tops, as clearly indicated in Figs. 3 and 4.

From Figs. 3 and lit will be seen that the width and hence the area, of the air space between two adjacent grate-tops depends upon the width of the spacer used between the two, so that by using spacers of greater or less Widththe grate may have any desiredj-air' capacity. It will also be seen that if'thespacers are all of the same width the air spaces will be all of the same area throughout the grate, but that by using spacers of difierent widths the air spaces "may be larger'or smaller in one part of the grate than another, as may be necessary or desirable according to conditions. In Fig. 4', for nstance, the spacers shown are successively wider from left to right, the spacers at the extreme left being narrow enough to v let the adjacent grate-tops come into actual contact with each other. Thus, by selecting Ispacers of the proper widths for the purpose practically any desired distribution of air supply over the grate can be obtained. In

; f general, the use of removable s acers beftween 'the grate-tops is a hig y advan- -tageous feature, as it permits a wide ran e offuels to beused on the same grate, mere y ,by-: se1ecting spacers which Wlll give the 'I gra'te the alr-capacity and, air-distribution 1 suit .3

able for the particular fuel which is to sed. e spacers are heldin position on the *fcarrier-barsand between the grate-tops by 'the 'o'verhang of the latter, as clearly shown in Figs. 3'. and 4, though they are loose on the carrier-bars so as 'to partake of the movements of the grate-tops as the carrier,--

bars are rocked by the arms 16. It is also desirable to have the'car'rier-bars suffi'ciently close together for the rear ends of the grate tops of each series to extend rearwardly beyond the spacers of the next series in rear,

- so that the spacers are well protected fromheat. I

Itis to be understood that the invention is not limited to the construction herein specifically described,,but.can be embodied in other forms without departure from its spirit. Nor is it limited to use withan automatic orself-stoking grate, nor to the particular type of self-stoking grate herein illustrated.

' I; claim 11 JLn-a furnace grate, in. combination, a

menace plurality of transverse'carriers or supports; .a plurality of'transverse series of laterally shiftable grate-tops mounted on the carriers or supports, eachseries comprising a'plurallty. of grate-tops arranged side by side on a carrier or support and extending longitudin'ally of the grate, with'the rear ends of the grate-tops of each series overlying and resting upon the forward ends of the series next in rear; and removable spacing mem-' bers of inverted V-shape arranged between the grate-tops of each series and straddling the same carriers or supports, to separate the grate-tops and provide-spaces for admission of air from below the grate-tops to the fuel above. 5

2. In a furnace-grate, in combination, a transverse support having an upwardly extending edge; a plurality of grate-tops ar-.

ranged side by side on the support and having downwardly open recesses fitting down upon said edge whereby the grate-tops are removably mounted on the support;

and spacers between the grate-tops having downwardly open recesses fitting down upon said edge of the support-whereby the spacers area'lso removably mounted on the support, the spacers serving to separate the rate the same laterally, the spacers having downwardly open recesses fitting down upon the upwardly extending edge of the support and the spacers extending laterally into the crate-top recesses and being beveledto fit the eveled edges of the recesses in the grate-tops.

' signature.

CHARLES HORN.

In testimony whereof I hereunto aflix grate-tops and provide spaces between them 

